15/18=7.5/x

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Solution for 15/18=7.5/x equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

15/18 = 7.5/x // - 7.5/x

15/18-(7.5/x) = 0

15/18-7.5*x^-1 = 0

-7.5*x^-1 = -5/6 // : -7.5

x^-1 = 0.11111111

-1 < 0

1/(x^1) = 0.11111111 // * x^1

1 = 0.11111111*x^1 // : 0.11111111

9.00000009 = x^1

x = 9.00000009

x = 9.00000009

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